ocr: Sears Tower Chicago,IL About the Sears Tower The Sears Towerin Chicago is the world's tallest building. This glass-and-steel skyscraper was built for Sears, Roebuck and Companyin1973.Its 11U floors rise to a height of1,454 feet (443 m). Visitors canl ride to an observation deck on the 103rd floor of the Sears Tower for a breathtaking view of the city and the Lake Michigan shore. (By the way, the second tallest building in the world is the World Trade Center in New York City.)